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The ionization'constant of an acid Ka, i...

The ionization'constant of an acid `K_a`, is the measure of strength of an acid.The `K_a` values of acetic acid, hypochlorous acid and formic acid are `1.74 xx 10^-5, 3.0 xx-10^-8` and `1.8 xx10^-4` respectively. Which of the following orders of pH of 0.1 mol dm-3solutions,of these acids is correct?

A

acetic acid gt hypochlorous acid gt formic acid

B

hypochlorous acid gt acetic acid gt formic acid

C

formic-acid gt hypochlorous acid gt acetic acid

D

formic acid gt acetic acid gt hypochlorous acid

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